Planograpk co



R. P. McNEIL.

SCRAPEB.

APPLICATION FILED JAN. 28, 1919.

1 ,312,1 28'. Patented Aug. 5,1919.

3 SHEETS-SHEET I.

R. P. McNElL.

SCRAPER.

APPLICATION FlLED JAN.28.1919.

Patented Aug. 5, 1919.

3 SHEETS-SHEET 2.

5] nve'wtoz Roderic/r P. Me Nell 1 l nz coLuMslA PLANOGRAPII co.. WASHINGTON. n. c

R. P. McNEIL.

SCRAPER.

APPLICATION FILED JAN. 28, 1919.

Patented Aug. 5, 1919.

3 SHEETSSHEET 3.

THE COLUMBIA PLANOGRAPH co., WASHINdTON, D c.

RODERICK P. MON-BIL, 0F SEATTLE, WASHINGTON.

SCRAPER.

ieiaias.

Specification of Letters Patent.

Patented Aug. 5, 1919.

Application filed January 28, 1919. Serial No. 273,616.

To all whom it may concern:

Be it known that I, Ronnnion I. MoNnIL, a citizen of the Dominion of Canada, and a resident of Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in scrapers, of which the following is an exact and clear specification.

This invention relates to improvements in scrapers and the object of this improvement is to provide a wheeled scraper of strong and durable construction that is particularly well adapted to be interposed in a cable circuit and to be moved back and forth to perform its work by a source of power located at a distance from the scraper. I

A further object is to provide a wheeled scraper of this nature wherein the cable through which the pull that fills the scraper is exerted is connected directly with the scraper bowl by means of hook members that automatically disengage themselves from the bowl when the latter is raised and permit such bowl to be dumped.

Still further objects reside in the provision of easily operated mechanism of novel form for raising and dumping the scraper and for holding it in a raised position.

The invention consists in the novel construction, adaptation and combination of parts of a wheeled scraper as will be more clearly hereinafter described and claimed.

In the drawings Figure 1 is a plan VlBW of a scraper constructed in accordance with this invention; Fig. 2 is a side elevation of the same, showing the bowl in a raised pos tion; Fig. 3 is a side elevation with parts broken away of the scraper showing the bowl in a lowered or filling position; Fig. 4 is a side elevation with parts broken away showing the bowl in a dumping position; Fig. 5 is a detail partly in section and partly in elevation showing ratchet mechanism for holding the scraper bowl in a raised position; Fig. 6 is a detail view in perspective illustrating certain locking mechanism embodied in the invention; and Figs. 7 and 8 are fragmentary views in elevation illustrating details of the invention.

Referring to the drawings wherein like reference numerals designate like parts the numeral 1 designates a scraper bowl that is mounted between the two side frame members 2 and 3 that extendlengthwise of the bowl and are connected at their front ends a curved cross member 4 and at a point ust to the rear of the scraper bowl by a straight cross bar 5.

Extending crosswise of the rear end of the frame and journaled within the members2 and 3 is a shaft 6 upon which are freely mounted two rear-wheels 7 and 8 that are provided 011 their inner sides withcentrally arranged fixedly mounted clutch members 10. e e

The front ends of the frame members 2 and 3 are connected by a transverse arched frame member 11, to the central portion of which is secured a bearing bracket 12 that forms a bearing for a stub shaft 13 on the top end of a forked member 14:, the forked member 1 f having a front wheel 15 journaled on a pin 16 that extends through the lower ends of such forked member and the wheel 15 serving to support the front end of the scraper frame. e

17 is a curved member that is secured by bolts 18 to the top side of the transverse frame member 4 in spaced relation therefrom, see F igz. 7 in such a manner that it cooperates with the transverse frame member 4 to form a guide for an arcuate steering member 20, the forward ends of which are secured to the forked member 14 and the rear portion of which is bent to conform to the curvature of the member 17, as more clearly shown in Fig. 1, the member 20 forming a part of the steering apparatus for the front wheel 1.5.

The steering member 20 is connected on opposite sides with the two ends of a steering cable 21 that passes around pulleys 22 at the front end of the frame thence rearwardly along the sides of the frame and thence around pulleys 23 and inwardly past.

the rear end of the bowl 1 and is wound upon a drum 24 that is mounted on a steering post 25 having a steering wheel 26 on the top end thereof, the cable 21. being wound upon the drum 24k in such a manner that when the drum isrotated one endof the cable will be wound upon the drum as. the other endfis unwound therefrom.

=-The scraper bowl 1 is provided on oppo- I by they are sti supported by bracket members 34.

The frame members2 and '3 are each provided aboutimidw'ay of'their length with two upright supports and 36 that are maderigid with the frame members by truss bracing 37, theiuprig'ht members 35 and 36 onjbppositef'sid es of thef'rame being con nected' at their top ends by tie rods 38 whereffen ed. and-braced. Manage ial pivots 40 that are provided on theiipright members 35 and 36 at about the level of thetop of the sor per are grooved pulleys41and42 over which a cable 43 is adapte to pass as hereinafter explained. Pijiotally 'iiioiint'ed on the bolts 33 that hold the 'bars 31 32 are arms 44 upon the outer ends of which are formedhooks 45 that attempted to engage withpins 46 when the arms are in the lowered position shown in Fig. 3', the pins 46 being supported by brackfets, 47 as show-n in Fig. 8,"and being rigid with thesides of thescrap'er bowl.

,Theouter ends of the arms 44 are shouldered as at 48' and are adapted to'have links 5O fit thereover' fand 'engage'with the shoulde rs 48. "Thelinks 50 being connected at one end with the end of the cable 43 and at the other endwith'the end of cables'52 that eX- tendto'asource of power not'shown, serve as a means by which the scraper may be drawn. The swmgmgmovc em f the arms 44 1S limited'by links 53 that are secured to the arms 44 by pivots 55 and are provided with slots 56 that work upon pins 57 that are rigidly secured to the frame members 2 andS. 7

' Fixedlysecu'red upon the shaftv 6 on the outside of the wheels 7 and 8 are two drums 58-and 60 to which are secured the cables 43 such cables being adapt'ed to be wound 'upon *the drums when the latter are rotated in 55 4 either direction. The cables 43 pass forwardly and upwardly from their respective dru'ms over .the. pulleys 42 thence downwardly around the pulleys 28 thence upwardly over the pulleys 41 and thence downwardlyand are secured to thelinks 50 on the top side of the arms 44..

' When the cables 43 are thus arranged and are unwound from their respective drums they will permit the scraper bowl to be low- I limit the ered into a position substantially as shown in Fig. 3 and the arms 44 to be pulled down until'the hooks 45 engage the )ins 46, the length of the cables 43 being sue 1 that when the cables are entirely unwound they will downward movement of the scraper bowl.

When the scraper bowl is lowered into substantially the position shown in Fig. 3 and the drums 58 and 60 are rotated in either direction the arms 44 will first be raised until the pins 57 strike the ends of the slots 56 whereupon the upward movement of the arms will be arrested and further winding of the cable 43 on the drums 58 and 60 will lift the scraper bowl 1 into the position shown in Fig. 2 by reason of the shortening of the loop in the cable 43 that passes around the pulleys 28. It will be noted that the pulleys 28 are disposed slightly in front of the center line of the bowl 1 so that such bowl will not dump during the process of lifting it.

The sides of the scraper bowl are provided at'points to, the rear of the rollers 28 with outwardly projecting lug members 61 beneath which plates 62 are adapted to engage to support the rear end of the scraper, the plates 62.being integral with or rigidly so cured to slide bars 63 that are guided for longitudinal movement on the tops of the frame members 2 and 3, the forward ends of the slide bars being adapted to project within notches 64 in the links 53 to hold the arms 44 in raised position. The rear ends of the slide bars are provided with up wardly projecting portions 65 that are connected with crank members 66 on the ends of a transverse shaft 67, the shaft 67 being provided with a suitable lever 68 by which it may be oscillated to move the slide members,

For the purpose of rotating the shaft ('3. I provide clutch members 70 that are splined upon such shaft and adapted to be moved into engagement with the clutch llltlllllOlS 10 on the wheels 7 and 8. l\lovement of the clutch members 70 lengthwise of the shaft is effected by means of a lever 71 that is connected by links 72 with bell erank levers 73 that are pivoted as at 74 and provided with fingers 75 that engage the opposite sides of flanges 76 on the clutch members 70.

The links 72 are preferably slotted as at 77 and have compression springs 78 interposed between them and the ends of the bell crank levers 73 so that the lever 71 may be thrown without regard to the relative positions of the jaw elements on the cluteh member 70 and the clutch members 10 and sueh clutch members will be caused by the springs 78 to snap into engagement when they register in the proper manner.

For the purpose of holding the shaft 6 in any desired position such shaft is provided at its center with a fixedly mounted ratchet wheel that is adapted to be engaged by thetwo ends of a pawl 81 to prevent it from rotating in either direction. The pawl 81, see Fig. 6, is pivoted as at 82 and is connected by a link 83 with a lever arm 84k that is movable over a quadrant 85 and may be set so that either desired end of the pawl 81 will engage the ratchet wheel 80 or so that such pawl will be entirely out of engagement with such ratchet wheel 80.

The lever arm 71 that controls the movement of the clutch member 70 is also preferably provided with a'quadrant similar to the quadrant 85 whereby it may be set in any desired position.

The control mechanism on the rear end of the scraper is mounted on a centrally arranged sub-frame 86 of substantially the form shown in Fig. 1. The rear end of the sub-frame preferably projects beyond the axle 6, is curved as shown and is adapted to have a haul-back line 87 connected therewith.

A platform upon which the scraper operator may stand is provided on the rear end but such platform has been removed to disclose the scraper operating mechanism and is not shown in the drawings.

The cables 52 by which the scraper is drawn preferablyextend through a spacing rod 88 and thence converge and are con- .nected with a draw cable, not shown, which may extend to any suitable source of power, as to the drum of a donkey engine.

When the scraper is empty and is to be filled the lever 68 is moved rearwardly thus moving the slide plates 62 out of engagement with the lugs 61 and permitting the scraper bowl to be lowered from the position shown in Fig. 2, the slide members 63 moving out of engagement with the notches 6 L at the same time and permitting the arms 44': to be pulled downwardly into the position shown in Fig. 3 with the books 45 in engagement with the pins 46 in which position the tension of the draw cables 52 will tend to cause the scraper to dig into the earth in well known manner so that the scraper bowl will be filled with earth.

When the scraper bowl is filled and is. to be raised the clutch members 7 0 are shifted into engagement with the clutch members 10 thereby causing the drums 58 and 60 to be rotated and to wind up the cable 43 which cable 43 will lift the scraper bowl, into the position shown in Fig. 2, and will also lift the arms 44 into the position shown in Figs. 2 and at. As soon as the scraper bowl has been. lifted the clutch 70 will be disengaged and the ratchet pawl 81 will be moved into engagement with the ratchet wheel 80 thereby locking the shaft and causing the bowl 1 to be supported in a raisedposition by the cables -13. The lever 68' will then be moved forwardly to cause the plates 62 to engage beneath the lugs 61 and the scraper will then be moved to the location where the load is to be dumped.

The bowl 1 is dumped by moving the pawl 81 out of engagement with the wheel 80 and thereb releasing the tension of the cables 43 so t at the front end of the bowl 1 is permitted to drop down and engage with the ground while the rear end of such scraper is held in a raised position by the engagement of the lug 61 with the plates 62. As soon as the front edge of the scraper strikes the ground further forward movement will turn the scraper bowl into a position substantially as shown in Fig. 4 thereby dump in the contents of the bowl.

fter the bowl has been dumped the pull on the draw cables 52 will be released and a pull will be exerted on the haul-back cable 87 thereby moving the scraper rearwardly and causing the bowl to automatically right itself.

At the same time that the bowl rights itself the clutch members 70 may again be thrown into engagement with the clutch members 10 and the drum 58 and 60. wound in a reverse direction to lift the bow] into the position shown inFig 2, in whiclnposition it may be locked by moving the pawl 81 into engagement with the ratchet wheel 80 and held until the scraper has again reached the location where it is to be filled.

In this way. the scraper may be moved back and forth and operated to pick up a load in one location and dump such load in another location. i

The scraper may be steered to a limited extent by turning the steering wheel 26, the draw cables 52 necessarily limiting the amount of deviation of the scraper from a straight path.

It will be noted that the rear wheels 7 and 8 are disposed directlyin rear of the scraper-bowl 1 thereby making it possible to operate the scraper in close proximity to an embankment without interference between the embankment and the wheels.

The'arrangement of the arms at that engage with the pins 46 makes it possible toeXert the pull for the purpose of filling the scraper directly on the scraper bowl, instead of'exerting such pull upon the frame of the scraper and having the bowl secured to the frame as is customary in scrapers of this yp a i a i i a The links 50 may be large enough so that they can be slipped over the books 45 onto the arms 44 and may easily be renewed. if they become worn. b

It will be obvious that changes in the preeise. form of construction. and the arrangement of the various parts disclosed may be resorted to ithin the scope of the claims.

What I claim is- 1. A scraper of the class described comprising a frame, ,a scraper bowl, links pivotally connecting said bowl to said frame,

arms pivoted at one end to said frame and frame in front of said bowl, means for raising said scraper bowl, arms pivoted atone end to said frame and having hooks on their opposite end, draw means connected with the hooked ends of said arms, and means on said scraper bowl adapted to be engaged by said hooked arms when said scraper bowl is in a filling position and disengaged from said arms when said scraper bowl is in a raised or dumping position.

As scraper of the class described comprisinga frame, a scraper bowl, links pivotally connecting said bowl to said frame, arms pivoted at one end to said frame and having hooks on their opposite end, draw means connected with the hookedends of said arms, means onsaid scraper bowl arranged to be engaged by the hooks on said arms when said bowl is lowered, means for lifting said bowl and means for automatically disengaging said hooked arms from said scraper bowl when said bowl is raised.

ff. A scraper of the class described comprising a frame mounted on wheels, a scraper bowl disposed in said frame, links pivotally connecting said bowl with said frame, drums mounted on said frame, means for rotating said drums, cables associated with said drums for raising said scraper bowl and supporting the same in a raised position and devices for engaging with the rear end of said scraper bowl and supporting said rear end in a raised position when said cables are released whereby the front edge of said scraper bowl will engage with the ground and cause said bowl to be dumped. j

5. A scraper of the class described com: prising a frame mounted on wheels, two grooved rollers journ'aled on the upper por f tion of each side of said frame, a scraper bowl d sposed within said frame, a grooved roller ournaled on each side of said scraper bow-l, links arranged on each s1de ofsaid bowl each of said links being pivotally connected at one end with said bowl and at the opposite end with said frame, draw pins arranged near the lowermost front corner on each side of said bowl, arms having hooks on one end engageable with said draw pins the opposite ends of said arms being pivoted to said frame, draw means connected with the hook ends of said arms, winding drums mounted on said frame, means for rotating said drums and cables secured at one end to said drums and the other end to said arms and passing around said grooved rollers to lift said scraper bowl and said arms.

6. A scraper of the class described comprising a frame, a transverse shaft journaled in the rear end of said frame, wheels rotatable on said transverse shaft, drums secured on said shaft, means for locking said shaft to said wheels whereby said drums may be rotated, means for locking said shaft in a fixed position when said shaft is disconnected from said wheels, truss members extending upwardly from the sides of said frame, grooved rollers journalcd on said truss members, a scraper bowl disposed within said frame, a grooved roller disposed on each side of said scraper bowl, links disposed on each side of said bowl with said frame, pins projecting outwardly from the sides of said bowl adjacent the lowermost front corners of said bowl, arms pivoted at one end to said f nine and having hooks at the other end to engage said pins, draw members connected with said arms, cables secured at one end to said arms and at the other end to said drums and passing around said grooved pulleys to lift said scraper bowl and said arms when said drums are retated and releasable means for supporting the rear end of said scraper bowl in a raised position.

7. A scraper of the class described comprising a frame, a guide wheel at the front end thereof for supporting the same, means operable from the rear of said frame for actuating the guide wheel to steer the scraper, a transverse shaft journaled in the rear end of said frame, wheels rotatable on said transverse shaft, drums secured on said shaft, means for locking said shaft to said wheels whereby said drums may be rotated, means for locking said shaft in a fixed position when said shaft is disconnected from said wheels, truss members extending upwardly from the sidesof said frame, grooved rollers journaled on said truss members, a scraper bowl disposed within said frame; a grooved roller disposed on each side of said scraper bowl, links disposed, on each side of said bowl and pivotally coi'inecting said bowl with said frame, pins projecting outwardly from the sides of said bowl adjacent the lowermost front corners-of said bow],

arms pivoted at one end to said frame and having hooks at the other end to engage said pins, draw members connected with said arms, and cables secured to said arms on each side of said frame thence passing upwardly over one of the pulleys on each of said upright truss members, thence clown- Wardly around said pulleys on said scraper bowl, thence upwardly over the other pulley on said upright truss members and thence rearwardly to said drums.

Signed at Seattle, day of Jan, 1919.

RODERICK P. MCNEIL.

eu m of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,, Washington, D. 0.

Washington, this 21st 

